<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
    <link rel="stylesheet" href="{{ url_for('static', filename='css/404.css') }}">
</head>
<body>
    <div class="container">
      <div class="row text-center">
        <div class="col-lg-6 offset-lg-3 col-sm-6 offset-sm-3 col-12 p-3 error-main">
          <div class="row">
            <div class="col-lg-8 col-12 col-sm-10 offset-lg-2 offset-sm-1">
              <h1 class="m-0">404</h1>
              <h4 class="m-0">页面未找到</h6>
            </div>
          </div>
        </div>
      </div>
    </div>
</body>
</html>